Eucalyptus: Our Story. Presented at LCA2011

Our Story

The Scientists

Proceedings of the 9th IEEE International Symposium on Cluster Computing and the Grid: The Eucalyptus Open-Source Cloud-

Computing System

The Paper

EUCALYPTUS

• Elastic• Utility• Computing• Architecture• Linking• Your• Programs• To• Useful• Systems

Eucalyptus Systems, Inc

The architecture

WSDL components

• Every component is a web service• WS-security is used between components• components have a well defined WSDL• WSDL may change at every release with the addition of new

features• a component can thus be fully replaced provided it satisfy

the WSDL

Some Features

• Open Source: GPL3• Written in C & Java, multi-threaded• Linux hosted• Chose your own hypervisor: Xen, KVM, VMware, ...• AWS API

o EC2 ("ECC")o S3 ("Walrus")

• Your own Instance Types & Availability Zones

Walrus Overview

• Flat namespace• Unit of data is an object

o Objects are stored in "buckets"o Up to 5GB per bucket in S3 (customizable in Eucalyptus)

• Operations for manipulating buckets and objectso Objects cannot be modified "in place"

• Shares credentials/user account information with Cloud Controller (EC2)

• REST and SOAP API supporto REST is more popularo Ability to upload from web forms (POST)

• S3 API guideo http://docs.amazonwebservices.com/AmazonS3/2006-03-

01/API/

How is Walrus used?

• User facingo Create/modify buckets, upload/modify/delete/copy objects

• Used to store user image templateso Root partition, kernel, ramdisko Encrypted and uploaded to Walruso Walrus decrypts using user credentialso Node controller obtains decrypted image(s) from Walruso Uses image files to create and run instance

• Used to store EBS snapshotso Made available to storage controllerso Volumes are created from snapshots

Current Walrus Limitations

• Uses file system as backendo redundancy provided by storage systemo not distributed (yet)

• Performance may be limited by the backend• Admin has to worry about sizing

What is coming...

• More AWS APIs• Improved API support

o Reduced Redundancy, Bucket Policies, Notifications (via SNS), MultiPart Upload, Large Object support, Streaming, ...

• Improved scalability, redundancy

Launchpad.net

• launchpad.net/eucalyptus• code• bugs• we push up every night

open.eucalyptus.com

• wiki• forums• documentation• concourse

Be a contributor

• CLA• patch against lp:eucalyptus/eucalyptus-devel• submit to our issue tracker (RT)

 • read & check RT• contributors can write to RT• others can use forum or email